The .thead-dark class adds a black background to table headers, and the .thead-light class adds a grey background to table headers:
| Firstname | Lastname | |
|---|---|---|
| Hello | Sheikh | hello@example.com |
| Hi | Khan | hi@example.com |
| July | Dooley | july@example.com |
| Firstname | Lastname | |
|---|---|---|
| Hello | Khan | hello@example.com |
| Hi | Bibi | hi@example.com |
| July | Marli | july@example.com |